#rotate-exterior{width:640px;height:480px;padding:5px;border:1px solid #ccc;position:relative;margin:20px auto;}
#rotate-pic{width:640px;height:480px;background:#eee;position:relative;}
#rotate-mark{width:100%;height:100%;position:absolute;z-index:2;left:0px;top:0px;background:red;filter:alpha(opacity:0);opacity:0;}
#rotate-pic img{position:absolute;z-index:1;}